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Home >> Mini >> 2010 >> Cooper S, 2D Hatchback, Standard >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 2 (Engine Electrical System - Repair - R56 (N12)) >> Alternator With Drive And Mounting >> 12 31 020 Removing And Installing Or Replacing Alternator (N12, N14)

12 31 020 Removing And Installing Or Replacing Alternator (N12, N14)

WARNING: This page is about a different variant/trim than selected.

Necessary preliminary tasks: 

N14 only: 

Release bolt.

Remove bracket (1) and place to one side.

Fig 1: Locating Bracket Bolts
G04796438Courtesy of BMW OF NORTH AMERICA, INC.

Bring belt tensioner (1) with wrench (2) into assembly position and hold.

Secure assembly position of belt tensioner (1) by sliding locating pin (3) in direction of arrow.

WARNING: Danger of injury!
Remove wrench (2) again from belt tensioner (1).

Remove drive belt (4) from alternator.

Fig 2: Identifying Belt Tensioner Positions And Sliding Locating Pin
G04796248Courtesy of BMW OF NORTH AMERICA, INC.

Unlock connector and remove.

Release nut (1) and remove battery positive lead.

Tightening torque 12 31 2AZ .

Release screws (2) and remove belt tensioner (3).

Tightening torque 11 28 1AZ .

Fig 3: Locating Connector
G04796260Courtesy of BMW OF NORTH AMERICA, INC.

Release screw with joint extension (1).

Tightening torque 12 31 1AZ .

IMPORTANT: Do not bend refrigerant line.
Bending the line can cause leaks!

Remove alternator.

Fig 4: Identifying Joint Extension
G04796441Courtesy of BMW OF NORTH AMERICA, INC.